henry



' Patented April 7,1874.

1,1.HENnY- MiIIA-Spi-ndles.

`ivrrnn STATES PATENT @Errea JOHN J. HENRY, OF BALTIMORE, MARYLAND.

IMPROVEMENT IN MILL-SPINDLES.

Speciiication forming part of Letters Patent No. 149,475, daed April 7,1874; application iled To all whom it may concern:

Beit known that I, JOHN J osnrn HENRY, of Baltimore, in the county ofBaltimore and State of Maryland, have invented certain new and usefulImprovements in Mill-Spindles; and I do hereby declare the followingtobe a full, clear, and exact description ot' the same,

. section, showing the removable cock-head and the lubricating devices.

4Similar letters of reference in the accompanying drawings denote thesame parts.

My invention relates to improvements in mill-spindles, which may beapplied to other vertical shafts; and consists, first, in the employmentof a removable socketed toe, fitting over the lower end of the spindle,and having its bearing in a screw-threaded socket attached to ahemisphere, the latter having its bearing in a sim` arly-formed socket,as described in Letters atent N o. 137,445, granted to me April l,1873.V The-object ot' making the toe removable is to replace it, whenworn, by another toe. My invention further consists in the employment ofa removable cock-head, on which the balance-rynd rests, which canreadily be detached when worn, and replaced by another cock-head. Myinvention also consists in the employment of sliding wedge-shaped bearing-bloclrs,havin g their inner surfaces concave to embrace the spindle,and itting in correspondingly-tormed grooves in a collar surrounding thespindle, and covered by a cap having an inclined upper surface, toprevent the ingress of dirt and grain, the wedge-shaped bearing-blocksbeing adjustable vertically by set-screws or their equivalents, toprevent lateral play of the spindle, `and compensate for the wear of thelatter. My invention further consists in the employment of certaindevices for lubricating the mill-spindle, as hereinafter more fully setforth. l

In the accompanying drawings, a represents a mill-spindle, the lower enda of which is in- February 2l, 1874.

serted in the socket of a removable toe, b, which is stepped in asocket, f, having its outer surface screw-threaded, to engage with afemale screw in the hemisphere g,- the latter having its bearing in ahemisperical recess in the block h, which supports the spindle, asdescribed in Letters Patent No. 137,443, granted to me, and dated April1, 1873. The removable toe b is attached to the lower end of the spindleby means of lugs on the spindle, which engage in notches or recesses inthe upper end of the toe, orby any other similar means, by which it canbe readily removed and replaced.

By this construction, it will be seen that, when the toe is worn, it canreadily be removed and replaced by another toe.

M M .re the millstones, the upper stone, M', being movable, and thelower one, M, stationary. c is a cock-head, provided with a socket inits lower end, which iits over the upper end of the spindle, and isattached thereto by lugs on the spindle, which engage with recesses inthe lower end of the cock-head, or other equivalent means. cl, Fig. l,is a crosssection ot' a part ofthe balance-rynd, the arms not beingshown in the drawing; and eis a similar section of a part of the driver,its arms not being' shown in the drawing. The ends ot' the arms of thedriver and the ends of the bail are made to enter recesses in the uppermovable stone M', in the 'usual manner.

It will be perceived by rendering the cockhead c removable it may bedetached readily when worn, and a new one substituted for the worn one.

The eye of the stationary millstone is bushed or filled with wood, asseen at o, in which is inserted the collar u, surrounding the spindle,and provided with horizontal arms z z, pro vided with holes, in whichare inserted screws s1 s1, which are screwed into the wood o, therebysecurely attaching the collar n to the eye otl the lower stationarymillstone M. m m are wedge-shaped bearing-blocks, made concave ou theirinner surfaces to embrace the spindle, which they surround.

m it in correspondingly-formed wedgeshaped recesses in the collar u, andare vertically adjustable in the recesses by means of screws s s, theheads of which bear against the lower ends of the bearing-blocks, fitinto openings s2,

The bearing-blocks m (see Fig. 3,) and pass through female screws madein perforatiens in the lower end of the collar n. The screws s s aresituated obliquely to the spindle, or in line of direction of thewedge-shaped bearing blocks on, and their lower ends are made without ascrew-thread, so that a wrench may be applied to turn them when it isdesired to adjust them.

By this construction, arrangement, and adjustment of the'bearingblocks,it will be seen that compensation may be made for any wear of thespindle around the collar, thus enabling the operator to prevent anylateral displacement of the spindle.

p is a cap, the upper surface of which is in'- clined, to prevent theingress of grain or dirt into the eye of the lower stone, and which,

' from its inclined position, serves to guide the grain toward the spacebetween the millstones. The side faces o of the cap p are cylindrical inform, surround the collar a, and are inserted in the wood o in the eyeof the stationary stone M. WV is a sleeve surrounding the spindle,securely attached thereto, and revolving1 with the spindle. The upperend of the sleeve YV is provided with a recess, r, for oil, (see Fig.4,) which is introduced therein through the tube t, passing up throughthe eye of the movable stone M. r2 r2 are oil-passages, any desirednumber being employed, through which the oil passes into theoil-passages r1 r1, bent right-angularly at their lower ends, by meansof which construction oil for lubricating the spindle is introducedbetween the collar and the sleeve W attached to the spindle. i is apinion, to which the motive power is applied to rotate the spindle, andwith it the stone M, attached thereto.

I claim as my inventionl. The removable socketed toe b, tting over thelower end of the spindle, and secured thereto by a detachable fastening,substantially as described, and for the purpose set forth.

2. The removable socketed cock-head c, fitting over the upper end of thespindle, and secured thereto by a detachable fastening, substantially asdescribed, and for the purpose set forth.

3. The collar n, provided with'wedge-shaped recesses for the receptionof the wedge-shaped adjustable bearing-blocks m m, in combination withthe cap p o', having an inclined upper surface, substantially asdescribed, and for the purpose set forth.

4. The cap p o', having an oil-tube, t, attached to its upper inclinedface, in combination with the oil-recess r and the oil-passages r2 r1,the whole arranged, constructed, and operatin g substantially asdescribed, and for the purpose set forth.

JOHN J. HENRY.

\Vitnesses NATHAN K. ELLswoR'rrr, MnLvILLn CHURCH.

